A top Westchester prosecutor – the son of Brooklyn DA Charles Hynes – has been suspended after allegedly crashing his county-owned car into rocks and shrubs and then leaving the scene of the accident, officials said yesterday.

Kevin Hynes, 39, one of Westchester County DA Jeanine Pirro’s top deputies, was issued a summons after telling North Castle cops he was involved in the crash early last Saturday.

Police were trying to determine exactly when the accident took place and whether an open alcoholic-beverage container found in the car may have been a contributing factor.

Police said a driverless 1997 Mercury registered to Westchester County was found shortly after 6 a.m. last Saturday along Route 22.

The car’s air bags had deployed, and the front of the car had been damaged, officials said.

Police were about to tow the car away when Hynes called headquarters to tell them about the accident.

Pirro’s office said Hynes was placed on indefinite suspension.

The up-and-coming prosecutor was home yesterday and did not have any immediate comment.

But his wife told The Post the family was “trying to figure out the best way to handle this.”

“We’re not saying anything right now,” she said.

Leaving the scene of a “property damage” accident is punishable by up to 15 days in jail or a $250 fine.

Pirro hired Hynes in January 2002, 16 months after he was among scores of friends who wrote to a federal judge urging leniency in the tax-fraud case against her husband, Albert Pirro.

He enjoyed a meteoric rise to the No. 3 post in her office and earns $128,000 a year.

Pirro released a statement yesterday saying her office asked for a special prosecutor to review the Hynes case.

Pirro said that when she learned about the accident, she asked the Putnam County DA to look into the case and provide whatever legal assistance North Castle police might require.

Hynes’ dad said it was “entirely appropriate for the Westchester district attorney to ask another district attorney to investigate.

“I have been informed of the facts by my son and I am satisfied he did nothing wrong.”